Grain-grinding mill.



M. MUTRO. GRAIN emwnme MI LL.

APPLICATION FILED SEPT. 26 I916.

Patented Mar. 6

19 4 sugars-Panza: l.

. APPLICATROMFILEDSEFLZEII916. -1 218 448.-

a a r M! MUTBOJ. GRAIN GRINDING MILL.

4 SHEETS-SHEET Z- Patented Mar, 6,1917.

Patented Mar. 6, 1917.

4 SHEETS-SHEET 3" M. MUTRO.

GRAIN GRINDING MILL APPLICATION FILED SEPT-26.15MB

Fig.5.

Patented Mar. 6, 1917.

4 SHEETS-SHEET 4- M. MUTRO. GRAIN GRIN-DING MILL..

APPLICATION FILED SEPT. 26, 1916.

UNITED STATES PATENT" OFFICE.

MICHAEL MUTRO, OF (Ill-IES'JJEJEL. PENDiSYLVANIA, ASSIGNOR OF ONE-TENTHTO JOHN RAW'LIUK, 'OF CHESTER," PENNSYLVANIA.

GRAIN-GRIN DING MILL.

To all'u' homit may concern:

Be it known that I, B'IICIIAEL Mu'rno, a subject of the Emperor ofAustria-lilungary, residing at Chester, in the' county of Delaware andState of Pennsyl ania, have invented certain new and useful Improvementsin Grain-Grinding Mills, of which the following is a specification. I

This inventionrelates to grain grindii'ig mills. v

The Object of the invention is in a ready,

expeditious and rapid manner primarily to crush or reduce grain, such ascorn. to a substantially' pulreruleiit mass and thereafter subject it toa grinding action which will bring it to the desired degree of finemess,the final stepof the operation beingto separate the coarser from thefiner particles of grain, and to segregate these (lifl'erent grades intoproper receptacles;

"ith the above and other objects in view as will appear as the nature ofthe inven tion is better understood, the same consists inthefl ovelarrangement and combination of piirts of 'a grain grinding millas' willbe hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification and inwhich like characters of reference indicate correspondinfi parts lgure 1is a view in side elevation of the mill. p

' Fig. 2 is a top plan VlCW thereof.

on""the line 3-? of Fig. 1.

Fig. l is a vertical transverse sectional view of the mill.

Fig. 5 is a longitudinalsection through the crushing hopper.

Fig. 6 is a fragmentary' detail view of the grinding disks, showing moreparticularly the mechanism by which adjustments may be effected to yarythe fineness of the product.

Fig. 7 is a fragmentary detail view displaying the n'ianner in which theupper grinding disk is driven from the actuating aft.

Figs. 8 and"9 are elevations, respectively, of the inner and outer sidesof the measuring crushing disk.

Figs. 10 and 11 are detail iews of certain parts of the apparatus.

The supporting frame of the machine Specification of Letters Patent.

Application filed September 26, 1916.

Fig. '3 is a horizontal sectional view taken 5 Patented Mar. 6, 1917.

Serial No. 122,245.

may be constructed in any suitable. manner. and as'tlie particulararrangement of its parts do not enter iutothe present in'veir. tion,detailed description thereof is omitted. The novelty of the inventioni'esidcs il i a peculiar arrangement of disks'for initially crushing thegrain, and a second seriesof disks arranged to receive the partially,crushed grain and reduce it to-thc desired fineness.

Arranged in theouter upper portion. of the frame is a .hopper 1.clea1'lyshown in Figs't and 5 in which is arranged a trans-. verse partitionthat partially closes the escapefrom the chute iii order to check thetoo rapid escape of the grain. Beneath the partition 9. are arrangei'ltwo crushing disks 3 a11d 4, the former of which is mounted upon a.rigid shaft 5, and the latter upon -a* shaft 6 that is driven through asprocket chain 7, and sprocket wheels Brand-4i from the main drive shaft10. The disks 3 and r have their opposed faces serrated or grooved toprovide grinding or crushing members, and the said opposed faces areslightly eoncaved in order to receive. a charge of grain. The disk. 4.as clearly shown in Fig. 9 is provided on its outer surface with aseries of pockets 1].. in this instance three. that extend close tothe-axis of the disk and terminate in discha'rgc'open ings li'throughwhich the grain inflmcaf. urcd quantities enters the concavcd or sulnstantially elliptical chamber lnet-wcelrthc. op-' posed faces of thetwodisks 3 and 4. 'P-luis the grain supplied to the hopper 1 will-pass?down and through the opci-iings '12 between the two disks, and in theevent-that the charge received is greater than can be. ac-- connuodatcdby the openings. the surplus will drop.down and he caught by a cover orshield 13 which will retain the grain in 1iosituiisiihsequently to bepicked up and returned between the disks; Tn':order.that 1 there shouldalways be the proper pressure between the two disks. the shaft 6 isprovided with a coiled spring 1+, one terminal of which bears against across-piece 15 on the frame and the other end against a hub or extension16 formed on the cover 13. After the grain has been propel-1v crushed,it escapes through the neck 17 (if the hopper 1 through an opening 18formed in a casing U) inclosing the two grinding disks2Q and '21, theopposed faces of which. -are serrated or toothed in the usual mannertosecure proper reduction ofthe grain, and ,from these dlsks 20 and:21,the 'comminuted' grain escapes; through a chute 22 onto ascreen 23 whereseparationof the grain,l-according to itsfineness is divided and iscaught and retained in sacks 24 that are suspended by; suitable meansfrom a bar 25 arranged at theside of the mill, doors 26 being providedwhereby to control the escape of the grain;

The grain is i-nitiallyfed into the base or receptacle 27 of a housing28 inavhich is arranged an ordinary bucket conveyer 29, the drive chain30 of Y which passes around sprocket; wheels 31 and 32 carried by shaftsjournaled in the chute casing, as clearly shown in Fig.1 4, motion-beingimparted to the shaft 32 by a sprocket chain 33 and a imparted to thescreen to insure the perfectsorting of the ground product and its. dis;

charge intothe receptacles provided for it.

- As will be .obvious, under certain condi-- tions it may be necessaryto vary the distance between the disks 20 and 21 '1n order that thedegree to which the grain maybe reduced may be varied and to accomplishthis result, the shaft 45. carrying the eccentric 43 is adapted to beraised and lowered by adjusting nuts '46 carried by bolts 47 rlgid witha fixed part of the frame, the .upper end of theshaft being providedwith a cleft 48 that is designed to be engagedfby a bar-i9 carried bythe disk 20, the 'coactio'n between the cleft and thebar being such thatpositive. rotary motion will be at all times imparted to the disk 20'when the parts of the'fi'machine are in operation. From the foregoingdescription it will be seen that although the means herein defined aresimple in character, that they will be thoroughly eflicient for. thepurposes de-.

signed and will co-act inthe production of a highly efficient andefliective' form of grinding mill. What'I claim as new'is:'-

1. A grinding mill embodying a pair'fof crushing disks, the opposedfaces of which are serrated and dished to provide a chamber, theexterior of one of the disks being provided with a plurality of pocketsand chamber;

2. A grinding mill embodying a air of crushing. disks,.the opposed facesof which are serrated and dished to provide a chamber, the exterior ofone of the disks being provided. with a plurality of pockets ant withopenings comml'lnic'ating with .'the' --chamber,'and a shleld or coverpartially 1nclosing'one of the disks andserving to catch andreturn'grain escaping from the pockets, 3-. A grinding mill-embodying apair of crushing disks, the opposed, faces of which are serrated anddished to provide a ch'a'nr her, the "exterior of one of the disks beingprovided with a plurality of pockets and with openings communicatingwith the chamber, a shleld or cover partially .mclosing one of the disksand serving to catch and return grain escaping from the pockets, andmeans for in'iparting rotary motion to the pocketed disk.- y

4. A grinding millembodying a pair of crushing disks, the opposed facesof which ,are serrated and dlshed to provide a chamber, the exteriorofone'of the disks being provided with a. plurality. of pockets and withopenings communicating with the chamber, a shield or cover partiallyinc-losing one of the disks and serving to catch and return grainescaping -from' the pockets, means for impartingrotary motion to the Fpocketed disk, and means for permitting the latter disk toyield'tdexcess pressure.

, 5. In a grain "grinding mill, a pair ofiinitial crushing disks, one ofwhich is station ary and the other revoluble and yielda'ble along its'longitudinal-axis, the-latter disk being provided with pocketscommunicating with the space between the two disks, and

means, for collecting and returning to the pockets any grain escapingtherefrom on the initial-operation of the machine.

In testimony whereof I aflix my signature in the presence of two.witnesses.

I MICHAEL MUTRO.

Witnesses:

Nmo'ro SUSIAK, ILKo PETRYK.

.with openings communicating. with the

